baber/WOPTO huggingface dataset:
Patent GB-853632-A (GB)
Title: Improvements in and relating to photographic cameras
IPC: G03B9/08
Filed: 1957-02-26
Abstract: 853,632. Photographic cameras. VOIGTLANDER A. G. Feb. 26, 1957 [March 1, 1956], No. 6443/57. Class 98(1) Apparatus for adjusting the shutter speed or diaphragm aperture in a photographic camera has a number of groups of symbols, each group referring to a different exposure factor, and manipulating means associated with each group and adjustable with respect to the symbols therein for operating a calculating mechanism, the output of which is conveyed to the shutter speed or diaphragm aperture setting member. As shown in Fig. 1, a photographic camera has an objective 3 with a rotatable focusing ring 4. The objective mount houses an iris diaphragm with two adjustment members, viz. a member 5 and a pointer 6 movable with respect to a scale 7 of film speed, filter factor or other fixed exposure factors. Four adjusting knobs 9, 10, 11, 12 are slidable in parallel slots in a wall 8 of the camera knob 9 moves with respect to a scale of shutter speeds; knob 10 to a series of symbols indicating weather conditions; knob 11 to symbols indicating subject reflectivity; and knob 12 for symbols for near, mid-distant and distant subjects. The symbols of the last three scales may be pictorial as shown, or may consist of letters or numbers. Each knob is connected to a slider 13, 14, 15 or 16 having a slot 17, 18, 19 or 20 engaging a pin 22, 23, 24 or 25. Wedges 26, 27, 28, 29 are pivoted to the pins connecting the knobs to the sliders, or, in a modification, are connected to the sliders in such a way as to allow transverse movement only with respect to the sliders. A slider 35, having an arm 34 engaging the adjusting member 5 of the iris diaphragm, is urged by a spring 36 against one surface of wedge 29. Other sliders 37, 38, 39 are placed between the wedges so that the upper surface of wedge 26 is urged against a stop 52. If knob 9 is set to a required shutter speed, a wedge 62 connected to slider 13 sets the shutter through action of a slider 63. Knobs 10, 11, 12 are set in accordance with the light and subject conditions, whereupon the diaphragm aperture is set through action of slider 35. The setting of knob 12 also focuses the objective, through action of a wedge 57 on a slider 59 with an arm 60 connected to the focusing ring 4. The stop 52, Fig. 2, slides in a bore in the camera wall. The upper part of the bore is threaded to receive a screw 49. A spring 55 is trapped between screw 49 and stop 52, but its action is overcome by the action of the stronger spring 36, so that projections 50, 51 on the screw 49 and the stop 52 respectively are forced into contact. If the settings of knobs 9-12 are such as to require the diaphragm to be set beyond the limit of its adjustment, then either the wedges cannot be moved or wedge 26 is not urged against stop 52, which is moved along its bore by spring 55 until a red surface 53 thereon becomes visible in a window 54 formed in the camera wall.
Patent GB-291535-A (GB)
Title: Improvements in or connected with appliances for use in practising the game of golf
IPC: A63B63/00
Filed: 1927-03-08
Abstract: 291,535. Crowley, J. S. March 8, 1927. Golf-practising appliances; outdoor games; table games.-An appliance for use in practising putting or for a similar operation on a table or out of doors with a golf ball or other spherical object comprises two members or the equivalent collapsably or foldably and directly interconnected book-wise and adapted to be supported on a suitable surface in such manner that the members form upwardly-converging surfaces which are maintained in such upwardly converging position by the use of a hinge or hinges interconnecting the two members or by a tie member or tie members interiorly interconnecting and extending between the two members. As shown, the members 1, 2 are retained in the inclined position by cords 5 and each has one or more holes 8 into which the player endeavours to project the ball by means of a club or by hand. A flap 10 may be hinged to the members so as to be capable of resting on either incline and of covering one or other of the holes 8 therein. The flap may be arranged to occupy the position 12. In a modification, Fig. 3, the device comprises a single incline 14 supported by a collapsable strut 13, and a perforated cover piece 16 may be engaged with a slot 18 therein to cover some of the holes and reduce the size of the central hole. In a further modification, instead of employing cords 5, the inclines may be made by creasing a single piece of material and the hinge portion may be stiffened by springs.
Patent GB-911120-A (GB)
Title: Improvements in or relating to toothed gearing
IPC: F16H49/00
Filed: 1959-02-25
Abstract: 911,120. Toothed gearing. UNITED SHOE MACHINERY CORPORATION. Feb. 25, 1959 [Feb. 26, 1958], No. 6485/59. Class 80 (1). In gearing of the type described in Specification 790,171 in which relative rotation between two intermeshing concentrically arranged gears, one of which is flexible with a different number of teeth and subjected to progressive radial strain by a rotating strain-inducing member, the strain inducer is adapted to engage the flexible member over an appreciable circular arc so as to provide a number of teeth in full engagement at any one time for the transmission of power. As shown, the strain inducer 24 is a non-circular cam rotating inside a flexible gear 23 concentric with an outer ring gear 20 and having opposite circular portions giving two circular arcs of full tooth engagement and intermediate portions of reduced diameter where the teeth are disengaged.
Patent GB-449921-A (GB)
Title: Improvements in gas meters
IPC: G01F3/22
Filed: 1935-03-01
Abstract: 449,921. Gas meters. SOUTH METROPOLITAN GAS CO., and SMITH, C. H., 709, Old Kent Road, London. March 1, 1935, No. 6505. [Class 54] The valve gratings 1, 2 of a dry gas meter are formed as a single integral member, each grating consisting of a parallelogramshaped member having two adjacent sides at an acute angle to one another and having the bars 11 separating the valve ports parallel to the centre partition A-A of the meter. The gratings are arranged adjacent to and on opposite sides of the partition. The slide valves 6 are operated by a common crank 8.
Patent GB-1154605-A (GB)
Title: Improvements in or relating to Automatic Release Devices, More Particularly for Machine Tools.
Inventor: VALLIERE PIERRE FRANCOS DE
IPC: B23Q11/04
Filed: 1967-02-10
Abstract: 1,154,605. Lathes. P. F. DE VALLIERE. 10 Feb., 1967 [17 Feb., 1966; 6 Jan., 1967], No. 6505/67. Heading B3T. [Also in Division F2] In an overload release device for a machine tool drive, idler gears 38 on a rocking lever 35 are held in mesh with input and output pinions 39, 40 by the attraction between a fixed block 26 of magnetic material and a magnet 30 connected to the lever 35. Pinions 39, 40 and gears 38 all have the same pitch circle diameter, but pinion 39 and its gear 38 have a larger module than pinion 40 and its gear 38 so that when the tooth loads overcome the magnetic forces and move the rocking lever 35 clockwise, pinion 40 and its gear 38 come out of mesh but pinion 39 and its gear 38 remain loosely meshed. The pinion 39 is freely rotatable on an output shaft 41 and the pinion 40 is keyed to the shaft 41. Gears 38 are connected for rotation together, e.g. by axial pins (9) (Fig. 6, not shown). The magnet 30 is housed in a sealed casing formed by a cup 25 secured to the block 26, a push rod 31 secured to the magnet engaging an arm 34 of the lever 35. The magnetic unit so formed is screwed into the machine frame 29, and is interchangeable with similar units having different magnet strengths. A manually adjustable torsion bar 48 acts via a crank member 44 pivoted on a pin 46 to oppose the force of the magnet 30, so that the torque at which the device trips is fully adjustable. A handle (52) (Fig. 8, not shown) on a sleeve 45 allows manual engagement or disengagement of the device. In modifications (Figs. 1-4, not shown) one magnet (10) mounted on the rocking lever attracts a second magnet (11) fixed in the frame, the air gap between them being adjustable either by screw-mounting one magnet, or by providing an eccentrically mounted pivot for the lever. An adjustable compression spring (16) may act between the lever and the frame.
Patent GB-1381123-A (GB)
Title: Process for curing epoxy resins
IPC: C08L63/00
Filed: 1971-03-11
Abstract: 1381123 Curing agents for epoxy resins SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 9 March 1972 [11 March 1971 8 Sept 1971] 6569/71 and 41916/71 Headings C3B and C3P Epoxy resins are cured by curing agent compositions which comprise the reaction product of (a) one or more diprimary amines, (b) a polymer containing more than one reactive group per molecule and having a M.W. above 1000 and a reactive equivalent weight above 500, the reactive groups thereof being capable of reacting with amine and/or epoxide groups (e.g. carboxyl, hydroxyl, halogen or mercaptan groups), and optionally (c) a polyepoxide, the amount of (a) being such as to ensure that the product -contains free diprimary amine in an amount of less than 80 wt. per cent of the total. When (a), (b) and (c) are all reacted, (b) may be first reacted with (a) or (c) and the other reactant added subsequently. Suitable reactants are listed. The compositions may contain diluents, particularly benzyl alcohol, and also accelerators, e.g. salicylic acid or p-toluene sulphonamide. The following examples are given of preparing the curing agent compositions: butadiene-acrylonitrile copolymer containing either terminal carboxyl groups or both terminal and pendant carboxyl groups or terminal mercaptan groups is reacted first with 4,4<SP>1</SP>-diaminodiphenyl methane and then with the diglycidyl ester of dimerized linoleic acid, benzyl alcohol and salicylic acid being added to the product; butadiene-acrylonitrile copolymer containing either terminal carboxyl groups or terminal mercaptan groups is reacted first with the diglycidyl ester of dimerized linoleic acid (in the former case in the presence of benzyl dimethylamine as accelerator) and then with 4,4<SP>1</SP>-diaminodiphenyl methane, benzyl alcohol and salicylic acid being added to the product; butadiene-acrylonitrile copolymer containing terminal carboxyl groups is reacted with either cyclohexyl propylene diamine or 3,3<SP>1</SP>-dimethyl-4,4<SP>1</SP>-diaminodicyclohexyl methane, benzyl alcohol being added to the product; and butadiene-acrylonitrile copolymer containing both terminal and pendant carboxyl groups is reacted with a mixture of isophorone diamine and trimethylhexamethylene diamine, benzyl alcohol and p-toluene sulphonamide being added to the product. Examples are also given in which curing agent compositions prepared as described above, and in one case a mixture of two such products, are used to cure a commercial epoxy resin (" Epikote 828 "-Trade Mark) in the presence of additional materials, viz. either a mixture of red iron oxide, asbestine, talc, a silicone resin and a thixotropic agent; or a mixture of benzyl alcohol, triphenyl phosphite and magnesium oxide.
Patent GB-991469-A (GB)
Title: Tiltable thrust bearings for heavy structures
IPC: E01D19/04
Filed: 1962-02-20
Abstract: 991,469. Spring mountings. W. ANDRA. Feb. 20, 1962 [June 13, 1961], No. 6607/62. Heading F2S. A resilient mounting constructed as a tiltable thrust bearing, e.g. for a bridge, comprises a pad 1 of rubber, or similar resilient material, which is accommodated within a metal trough member 2, 3 of cylindrical shape and is covered by a metal load-bearing plate 4, a lubricating layer of solid, liquid, paste, or pulverulent material, offering a low frictional resistance to movement, being interposed between the pad 1 and the bearing parts. A sealing ring 5 is located around the upper edge of the pad 1. The relative position of the parts may be reversed, the member 2 being located above the plate 4. The trough member may be made from reinforced concrete by inserting a metal ring into a recess in the concrete. As shown in Fig. 4, a slidable metal plate 6 is supported on the pressure plate 4 a lubricant, or special stainless steel sheets, being placed between the plates 4, 6. In a modification, Fig. 5, the thrust bearing 1-5 is slidable within an oil, or bitumen-filled trough 8 which is provided with a cover 7. A thrust bearing can be combined with one or two sets of roller bearings or with balls 23, Fig. 10, which are located in a shallow trough 24 containing lubricant. According to Fig. 11, lubricating layers of solid, liquid, paste, or pulverulent material 25, 26 are inserted respectively between the upper and lower faces of the pad 1 and the corresponding faces of the plate 4 and the base 3 of the trough 2, 3, in order to reduce the friction between these faces when the pad is deformed during tilting motions of the bearing. In a further modification, the top of the pad 1 is hollowed out and is enclosed by the plate 4 and an annular shoulder on the pad to form a lubricant chamber. In a further modification, Fig. 15, two fluid-filled chambers are provided interiorly of the pad 1.
Patent GB-1107131-A (GB)
Title: Improvements relating to the operation of blast furnaces
Inventor: BERRY MAURICE ALBERT
IPC: C21B5/00
Filed: 1965-02-16
Abstract: Fluid fuel is burnt in a separate combustion chamber, and the products, after addition of oxygen to obtain the desired temperature and oxygen content, are supplied to the furnace as blast.  Additional liquid or gaseous fuel may be supplied directly to the furnace.
Patent GB-676723-A (GB)
Title: Improvements in and relating to copolymers of a diene hydrocarbon and unsaturated fluorinated compounds
IPC: C08F236/16
Filed: 1950-03-16
Abstract: Diolefines are copolymerized with one or more unsaturated fluorinated hydrocarbons selected from 1,1,2-trichloro-3,3,3-trifluoropropene - 1, 2,3 - dichloro - 1,1,1,4,4,4 - hexafluorobutene - 2, 1,2 - dichloro - 3,3,4,4,5,5-hexafluorocyclopentene, and hexafluorocyclobutene. Diolefines specified are butadiene-1,3, 2-methyl butadiene-1,3, 2,3-dimethyl butadiene-1,3, pentadiene-1,3, and 2-methyl pentadiene-1,3, also present may be other copolymerizable monomers such as styrene, ethyl acrylate, methyl methacrylate, and acrylonitrile.  The polymerization may be carried out in bulk or dispersion with the aid of heat or actinic light or in the presence of catalysts such as ozone, ozonides, barium peroxide, sodium peroxide, persulphates, perchlorates and perborates, acetyl, lauryl, stearyl and benzoyl peroxides, tert. butyl perbenzoate, tert. butyl hydroperoxide-1, aluminium halides, methacrylic acid, hydrofluoric acid, and cobalt and manganese resinates, linoleates and maleates.  Emulsifying agents, such as soaps, polyvinyl alcohol, water-soluble salts of polymerized methylene polycarboxylic acids, and water-soluble salts of sulphosuccinic esters, are preferably employed when carrying out the reaction in aqueous dispersion.  The properties of the copolymers may be modified during reaction by the addition of modifying agents such as mercaptans.  The products vary from insoluble and infusible bodies to rubber masses; the rubbery copolymers may be vulcanized in the presence of carbon black and zinc oxide.  The copolymers may be compounded with natural rubber, reclaim rubber, polystyrene, polyvinyl acetal, vinyl halide resins, polyalkylene sulphides, wood flour, zinc oxide, whiting, clay, ferric oxide, mica and glass fibres and may be employed for electrical insulation, impregnating fibrous sheets, and, mixed with finely-divided alundum, for abrasive wheels.
Patent GB-493594-A (GB)
Title: Improvements in electrical snap-action switches
IPC: H01H19/62
Filed: 1938-03-03
Abstract: 493,594. Snap action switches. GENERAL ELECTRIC CO., Ltd., and HARRISON, W. J. D. March 3, 1938, No. 6681. [Class 38 (v)] A snap-action switch for high-frequency currents comprises contact spring sets 1, 3 operable by cams 5 on a shaft 7. The cams are provided with an arm 13 which engages a hole in a U -shaped link pivoted at 17, 12 and driven through a dead-centre tension spring 21 by a link 19 moved by an operating knob 20. The contact springs and cam-shaft are mounted on a frame 23 and can be removed as a unit without disturbing the actuating mechanism.
Patent GB-1563677-A (GB)
Title: Error correction in electrical meters
IPC: G01R35/04
Filed: 1978-02-20
Abstract: For this automatic correction, the inputs of the meter are switched to zero potential within short time intervals by an electronic change-over switch. During the subsequent measurement, deviations from the set point are detected and stored. Furthermore, the inputs of the meter are connected to one or a number of reference quantities within short time intervals and any deviations from the set point are detected and stored. When the power consumption is measured, the stored correction values are used for compensating for all zero-point and calibration errors.
Patent GB-500321-A (GB)
Title: Improvements in or relating to switches for high-frequency oscillating circuits
IPC: H01H1/00
Filed: 1938-03-03
Abstract: 500,321. Switch contacts ; sparking- preventing. SCHAUB APPARATEBAUGES., G. March 3, 1938, No. 6748. Convention date, March 6, 1937. [Class 38 (v)] A high frequency switch for radio circuits has one or both of its contacts made of a material such as carbon the resistance of which decreases on an increase of pressure, so that the actual make or break occurs at a low current value thus reducing undesirable noise in a radio receiver. As shown in Fig. 4, the contact 3 is made of carbon and is engaged by a metal contact 7 on a spring 5, the contact resistance being greatly reduced when full pressure is applied, the circuit being finally completed through a pair of metal contacts 20, 21 to cut out the residual resistance of contact 3. Fig. 6 shows a method of mounting a carbon contact 12. The non- contacting surfaces are coated with copper and an annular groove in the contact is snapped into a hole in the spring blade 15 which is slotted at 16 to allow for yielding engagement.
Patent GB-330243-A (GB)
Title: Improvements in or relating to grips for sports-implement and other handles
IPC: A63B49/08
Filed: 1929-03-01
Abstract: 330,243. Herrtage, S. E. March 1, 1929. Hand-wheels.-A hand grip comprises a member 2 provided on its external surface with projections or studs 3 having concave tops for the purpose of effecting a suction action on the hand.
Patent GB-1428926-A (GB)
Title: Ring-halogen-free substituted triazines as bleach activators
IPC: C11D7/54
Filed: 1974-02-14
Abstract: 1428926 Pyridinium-1,3,5-triazine derivatives AMERICAN CYANAMID CO 14 Feb 1974 [21 March 1973] 6870/74 Heading C2C [Also in Divisions A5-A6 C4-C5 and D1- D2] Pyridinium-1,3,5-triazine compounds of formula are prepared by reacting the appropriate difunctional monochloro-1,3,5-triazine with pyridine (1 : 1) in ethyl acetate. R 1  and R 2  may be selected from dicyanomethylamino and methoxy. Use.-Activator for peroxy bleaches.
Patent GB-1513711-A (GB)
Title: Spray device
IPC: B05B1/28
Filed: 1977-02-18
Abstract: 1513711 Crop sprayers G LINDNER 18 Feb 1977 [18 Feb 1976] 6962/77 Heading AID [Also in Division B2] A crop-spraying device comprises a nozzle pipe 5 terminating in a spray nozzle 7, and dish-shaped shields 1 which are disposed on opposite sides of the nozzle axis and are mounted so that they can be swung towards and away from said axis for varying the lateral confinement of the spray. The shields, which may be made of glass fibre-reinforced polyester resin, have integrally moulded upper end portions 2 of part-spherical shape which are held by a clamp 8 against a ball 3 having a bore 4 receiving the nozzle pipe 5. The orientation of the shields and the position of the nozzle pipe relative to the ground are adjustable by loosening the clamp 8. The ball 3, which may also be made of the polyester resin, is in two halves and has a second bore 4 for receiving a larger diameter nozzle pipe. The clamp 8 has integral arms (10, 10'), Fig. 2 (not shown), for attaching the device to a support. The spray nozzle 7 produces a flat fan-shaped spray whose major axis is normal to the direction in which the device travels between the plant rows.
Patent GB-918657-A (GB)
Title: Improvements in or relating to cartons for containing and delivering granular or powdered material
Inventor: BRANDON MICHAEL BRIAN
IPC: B65D5/74
Filed: 1960-02-29
Abstract: 918,657. Cartons for granular or powdered material. CHAMBON Ltd. Feb. 27, 1961 [Feb. 29, 1960], No. 7015/60. Class 18. A cardboard carton formed from the blank shown in Fig. 1 has pouring apertures 37, 38 which are co-incident when the blank is folded and glued; a tab 40 is torn along a weakened line 39 and bent at 41, 42 (see Fig. 4) to form a spout.
Patent GB-622367-A (GB)
Title: Improvements in vehicle body construction
IPC: B60J5/04
Filed: 1947-03-13
Abstract: 622,367. Windows. FORD MOTOR CO., Ltd. March 13, 1947, No. 7055. Convention date, April 27, 1946. [Class 20(iii)] [Also in Group XXXII] A car door comprises inner and outer metal panels 20, 21 between which is housed the U-shaped window frame 27 and is characterised in that the frame 27 is formed of sheet metal bent into a channel shape with a marginal flange, formed by bending the material back on itself 38, 39 and with a bead 37. The flange 38, 39 and the bead 37 co-operate with the sealing strip 47 and with the wind strip 51. The side flanges 36, 41 are bent towards each other at 43, 44 to engage the edges of the glass run 42 to retain it in position. The right hand side of Fig. 4 shows the frame and glass run adapted for use with a fixed rear quarter window.